Calculating-machine.



F. TBINKS. cALcuLATmG MAcHmE. APPLICATIDN FILED FEB. 25| 1911i.

Patented Novn 9, 1915.

2 SHEETS-SHEET l.

F. THNKS. CALCULATNG MACHINE. @VPPLICATIOH man FEB. 26, 1914,

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Pmi-)M35i Nw. 99 3.915

2 SHEETS-SHEET 2.

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FRANZ TRINKS, OF BRUNSWICK, GERMANY.

cALoULATiNG-MAGHINE.

T all Iwlw-'m` it muy Concern Be it known that I, FRANZ Timms, manufacturer, vcitizen of the Duchy of Brunswick, Empire `of Germany, residing at Brunswick, Germany, have vinvented certain new and useful Improvements in Calculating-Machines, of which the following is a. specification.

My invention relates to improvements in calculating machines, and more particularly to the spring actuated detent mechanism for holding the numeral wheels of the registering mechanism in correctposition. In machines now in use the said detent vmechanism consists of spring actuated `levers which engage in the teeth of the 'spur gears connected with the numeral wheels. If it is desired to reset the numeral wheels the said levers must be thrown out of engagement with the 20 spur gears, for which purpose they* are rocked together withv their springs in a radial direction away lfrom the spur gears. This construction is objectionable in so far as it requires much room, so that certain dev tent mechanisms cannot be used, especially suchas consist of a rocking' lever having its opposite arms engaging alternately in the teeth of the spur gears. vMore particularly this detent mechanism cannot Abe used in calculatingr machines in which the registering mechanism is mounted. `on a slide which is adapted to be shifted `in a direction parallel to the shaft of the setting mechanism, for

which reason in machines of the type speci-I lied detent mechanism of a more simple and su teeth is'comparatively large.

The object of the present improvements is to provide la detent mechanism of this class in which this objection is avoided..

Vith this object in. View my invention '45 consists in so mounting the detent mechanism that for throwing it out of engagement with the spur gears it is shifted in a direction parallel to the axis of the numeral wheels. Thereby I am enabled to utilize a detent mechanism of any preferred construction, and more particularly a detent mechanism in which the detent consists of a rockingv lever having twoarms which alternately engage in the teeth of the spur gears 52;' lconnected with the numeral wheels. When f -thus constructed. the throw of the mecha- Specification of Letters `Patent.

Patented Nov, Q

.Application filed February 26, 1914: Serial No. 821,202.

nism for shifting the detents out ofoperative Vpositions relatively to the numeral wheels is very small, and as a matter of fact 1t is only a little more than the breadth of the teeth of the spur gears.

For the purpose of explaining the invention several examples 'embodying the same, yhave been shown in the accompanying drawings, in which the sameI letters of reference have been used in all the views to i11- dicate corresponding parts.

In said drawings Figure l, is a front view partly7 in section showing a calculating machine in which thedetents for the numeral wheels consist of rockingv levers, and in which the setting mechanism consists of setting disks having radial teeth which are adapted to be shifted by cam disks into or out of operative positions, Fig. 2, is a crosssection of Fig. l, Fig. 3, is a detail view partly in section showing a modification of the detent mechanism, Fig. i, is a cross-sec- A tion of the carriage carrying the registering mechanism of a calculating machine provided with a modification of the detent mechanism, and Fig. 5, is a side view of the said carriage with all the numeral wheels removed. v I

Referring 'to the example illustrated in ,Figs l and 2, my improved calculating machine consists of setting disks p which are mounted on a shaft pg'adapted to be rotated from a crank 'g by means of gear wheels g1 and Q2. For setting the desired number of teeth on the setting disks cam disks'p1 are provided. The teeth of the lsetting disks are I arranged to engage intermediate gear wheels 7' mounted on a shaft 111 and adapted to impart rot-ary movement togear wheels b connected with numeral wheels c, as is shown in Fig. 2. The numeral wheels c are loosely mounted on a resetting shaft g, and the said resetting shaft and the shaft r1 are mounted on a carriage s which is slidable in a direction parallel to the shaft p2 of the setting mechanism. On the said carriage and coaxially of the registering mechanism c a revolutions counting mechanism t is provided which is adapted to be operated from the shaft p2 of the setting mechanism by means of a single tooth c), as is shown in Fig. l. e

The numeral Wheels c are adapted to be rotated with. a step-by-step movement which is caused by the operation of the disk p. To prevent any lexcess movement 'of the gear t by springs d ,in engagement. with the gears b of the numeral wheels c and which are mounted on a common shaft e. The roundedor enlarged end G of the detent a is adapt- -ed to engage between the teeth of the gear 7) and to be moved. downwardly against the tension of the spring ,cZ upon rotation of said gear b, which movement throws the opposite locking end 7 thereof into engagement with the teeth of the gear b and thereby completely and positively arrests the rotating motionof said gear. As soon as the 'tooth ofthe gear b, which has just engaged with the end 6 of the detent a and operated the same to move downwardly, has passed said enlarged end, the spring d expands and moves the end 7 again between the teeth of the gear b whereby the numeral wheel c is held in position to properly display the correct number through the peep hole. As shown the said shaftand the springs d are mounted on a slide f which also provides a bottom support for the springs d. The slide f' is adapted to be shifted in a direction parallel to the shaft g of the registering mechanism, and it is normally held with the detents a in operative positions relatively to the gear wheels b connected with the numeral wheels c by a stop z' and a spring it. To the slide f a stop member 7c is'secured which engages the beveled bottom of a lateral notch o in a disk m which is connected with or mounted on the shaft g of the numeral wheels. Therefore when turning the resetting shaft by means of a wing nut n the slide f is shifted longitudinally together' with the detents a, in thedirection indicated in Fig. 1 by the arrow Thereby the detents a are thrown out of engagement with the gear wheels b. In order that the springs d cannot be extended when the detents are thrown into inoperative positions stop members Z are provided, and in the example illustrated one for each of the dctents. The slide is held in inoperative position, until the resetting shaft has completed a full rotation` whereupon the stop /f is forced by the spring t into engagement' with the notch o. and the detents a are shifted laterally and into engagement with the teeth b. For throwing the detents into inoperative positions a slight displacement of the slide f and of the. detents is sufficient, such displacement being equal to the breadth-of the teeth of the gear wheels Z1. The dctents can be constructedin any known or preferred way.

It will readily be understood, that the means for shifting the slide j' may be conlstructed in different ways. ln the` example t illustrated in Fig. 3 the disk for shifting the slide f is mounted at the opposite end of the shaft g and it is not provided with a notch but with a projecting cam 01 which engages that the slides f and f1 lrepresent examples of means for shifting the detents into and out of operative vposition relatively to the gear wheels l), and that in lieu of the means lshown in Figs. l to 3 other means may be provided. In order to further demonstrate that my invention is not limited to the constructions shown in the drawings, l have shown in Figs. 4 and an example in which the said shifting means are constituted by a frame connecting all the detents. As represented the shaft et which carries the detente is shiftable in the side walls f2 and f" of the carriage s, and it is connected by side members u. and n with a longitudinal rod tr, the said parts forming a :rigid frame which is shiftable on the resetting shaft g2. The

rod a' provides a bottom support for thesprings c 2 acting on the detents. Axial displacement is imparted to the said frame e2, u, r, and to the detents ai and the bottom support w thereof from the resetting shaft g2 through the intermediary of a disk la: which for this purpose is formed with a cam m3 adapted to shift the frame in opposition to a spring l claim herein as my invention:

l. In a calculating machine` the combiN nation with rotatable n un'ieral \\'heels and arresting means, of detents for causing the numeral wheels. to rotate with a sttai-hy-step movement and adapted to completely arrest each step movement and hold said wheels in correct positions, and means connected with the arresting means for shiftingr said detent in the direction of the axes of the numeral wheels to release the latter. i

2. ln a calculating machine. the combination with rotatable numeral wheels. gea r wheels connected with s`aid numeral wheels aud resetting n'ieans, of detents for succo :tively engaging cach tooth of said gear wheels and causing the numeral wheels to rotate with a step-lunetta) movement` said dctents being adapted to completely arrest shittingsaid detents in the direction of the axes of the numeral Wheels to i'elease'the latter.

4. In a calculating machine, the combination with rotatable numeral wheels and re` setting means, of detents for causing a stepby-step rotation of said numeral Wheels and for holding the lat-ter in correct positions after each step-by-step movement, a slide .whereupon Said detents are mounted. and a rotary member carried by said resetting means for engaging with said slide to shift the latter and the detents in the direction of vthe axes of the numeral vvheels to release said detents from said Wheels.

5. VIn a calculating machine. the combinationl with rotatable numeral Wheels. and resettingy means, of detents for causing said numeral ivheels to rotate with a step-by-step movement and for holding said wheels in correct positions after each of said step movements, ashaft upon vvhich said detents are mounted, a slide carrying said shaft, and means connected with said-resetting means `for shifting the slide and the detents in the direction of the axes of the numeral wheels, to release said detents from said Wheels.

6. In a calculating machine, the combination, with the numeral Wheels, and resetting means; of sp"ingcontrolled, rocking detents Jfor holding said numeral ivheels in correct positions; a shaft whereon said detents are mounted; a slide carryingsaid shaft; and means connected with said resetting means for shifting the slide and the detents in the direction of the axes of the numeral vvheels, to release said detents from said Wheels.

gage said vvheels and hold the same in correct positions; means for releasing said detents from such engagement: and means for holding said detents in depressed or ineffective positions While so released. y 8. In a' calculating machine, the combination, With the numeral wheels. and resetting means; of detents adapted to engage said vvheels and hold the same incorrect positions; means for shifting said detents laterally in the plane of said engagement, wherebythe detents are released from such engagement; and means for holding said detents in inoperative position while so released. f

9. In a calculating machine, the combination, with the numeral Wheels, and resetting means; of rocking detents adapted to engage 'said wheels and Ahold the same in correct positions; means for shifting said detents laterally in the plane of said engagement, whereby the detents are released from such engagement; and means for holding said detents in depr ssed positions while so released. 1

l0. -In a calculating machine, the combination, with Vthe numeral Wheels, and resetting meanspot' detentslv adapted to engage.

said wheels and hold the same in correct positions: means for shifting said detents laterally, to release them from such engagement; and stops engageable with said de- .tents vvhen so shifted, 'to' hold them'in inoperative position.

ll. In` a calculating machine, the combination, vvith the numeral Wheels, and resetting means; of detents adapted to engage said wheels and hold the same in correct positions; a movable element carrying said l detents a rotary member carried by saidresetting means: and a member carried by said movable element and engageable by said r0- tary member during its rotation, to shift said movable element and said detents and release the latter from engagement with said numeral wheels 12. In a calculating machine, the combination, with the numeral wheels, and resetting means; 'ot detents adaptedto engage said ivheels and hold the Same in correct positions; a movable element carrying said detents; a rotary member carried by said resetting means; a member carried by said movable element and engageable by said rotary member during its rotation. to shift said movable element and said detents and release the latter from engagement with said numeral Wheels; and means for holding said Vdetents in inoperative position While so released.

13. In a calculating machine, the combination, vvith the numeral Wheels, and vresetting means; of spring-controlled, rocking detents adapted' to engage said wheels and hold the same in correct positions; a movable element carrying said detents; a rotary member carried by said resetting means; a member carried by said movable element and engagevable by said rotary member during its rotation, to shift said movable element and said detents and release the latter from engagement vvith said numeral wheels; and stops arrangedto engage' and depress said detenta' when so released.

'14. 1n a calculating machine, the combination with numeral ivheels and resetting means, of spring-controlled rocking detents adapted to engage said wheels and hold the same in correct positions, a movable member carrying said detents, a rotary member carrying said resetting means, and a member carried by said movable element and engageable by said rotary member during its rotation to shift said movable element and said iis detents and release the latter from engagement with. said numeral wheels.

15. Ina calculating machine, the combinationwith the numeral wheels and resetting mechanism; of spring-controlled, rocking detents 'arranged to engage said wheels to hold the 'same in correct positions; means 'for shifting said detents laterally, tovrelease them from such engagement; and stops arranged to engage and depress said detents When so released.

connected with said resetting means 'for shifting said slideland Said detents in the d irection of the axes of said wheels, to release said detents from such engagement;

1 1T. In a calculating machine, the combina-- tion, with the numeral Wheels and resetting mechanism; of'detents adapted to engage said wheels and hold them m 'correct positions; and connections between said resetting ymeans and said detents for 4automatically releasing the latter during'the resetting operation.

18. In a calculating machine, the combination, with the numeral wheels and resetting mechanism; of detentsadapted to engage said wheels and hold them in correct positions; connections between said resetting.

means and said detents for automatically re,- leasing the latter during the resetting operation and means :arranged to engage and hold said detents itl/inoperative positiony while so, releasedp/ f l 19.,In a calculating machine, the combina- ,..tiofn with rotatable numeral Wheels and resetting means, of l.rockingdetents'comprising two arms adapted to engage the .wheel and to intermittently arrest the/rotation of vsaid wheels and hold the same in correct position, and means for shifting saidfdetents laterally to release the latter from said engagement. l

In testimony whereof I have hereunto yset my hand in presence of two subscribing itnesses.

Witnesses y VILHELM LEHRKE, KARL MUN. 

